Gun-barrel.



sun BARREL. (Applicatinu led Jan. B, 1902.)

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Gun BARREL.

A Application led Jan. 8. 1902.3 (un Model.) 2 sheets-sheet 2.

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i UNITED STATES PATENT CLARENCE J. HAMILTON, OF PLYMOUTH, MICHIGAN, ASSIGNOR TO C; J. HAMILTON da SON, OF PLYMOUTH, MICHIGAN, A COPARTNERSHIP.

GUN-BARREL.

SPECIFICATION forming part of Letters Patent N o. 704,962, dated July 15, 1902. Original application filed May 13, 1901, Serial No. 59,997. Divided and this application filed January 8, 1902. Serial f'o all whom it may concern'.-

Beit known that I, CLARENCE J. HAMIL- TON, a citizen of the United States, residing at Plymouth, county of Wayne, State of Michigan, have invented a certain new and useful Improvement in Gun-Barrels; and I declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it pertains to make and use the same, reference being had to the accompanying drawings, which form a part of this specification.

My invention relates to improvements in firearms; and it consists in the novel con struction ofthe barrel. l

My invention relates to that class of rides shown in my application Serial No. 59,997, and this application is a division of the said application.

The invention is shown in the accompanying drawings, in which- Figure 1 is a side elevation of the rear portion of the barrel and the forward end of the receiver to show` their connection. Fig. 2 is a bottom view of the same. Fig. 3 is a crosssectional view. Fig. et is a similar view of the variation hereinafter described. Fig. 5 is a bottom view of the outer layer or covering. Fig. 6 is a bottom view of the barrel and the front end of the receiver, showing the connection like that shown in Fig. 4 and showing the band at the forward end by which the outer covering of the barrel is held on.

In the drawings, A represents the inner riiied lining of the barrel, which I prefer to make of brass according to the method described in my Patent No. 660,725, October 30, 1900. This inner lining is surrounded by a series of concentric tubes formed of sheet metal so arranged as to break joints. In the drawings I show the tubes D and E nearest to the ried lining and the outer tube or barrel covering B. This outer tube is formed, as shownin Fig. 5, with the seam coming directly underneath the barrel, and it is provided at the rear end with a slot b. In building up the barrel thisouter cover is arranged to be separated from the barrel and to be assembled with it after it is nished-that is, after (No model.)

it has been blued. The object of this feature is to provide for bluing this tube or cover when separated from the rest of the barrel, thereby avoiding heating the other parts of the barrel to a temperature necessary for bluing it.

C represents the receiver, with which the rear end of the barrel is engaged. The mannerin which these parts are engagedis through the use of a key and locking means. In preparing the barrel toadapt it to be` engaged with the receiver I provide the rear under side of the barrel with a longitudinal rib d. In the form shown in Fig. 3 this `rib is formed by outsetting the edges of the rear end of the tube D. In the form shown in Fig. 4 the rib is formed of an independent filling-piece soldered to the tube D and eXtendin g out through the opening b in the outer covering B. The forward end of the receiver is provided with outstanding edges c, which come against the rib d and to which the edges are locked by a key F. To provide for engaging the key with the connecting parts, a channel or keyway is cut across the connecting edges and the key laid in the adjacent edges of the connecting parts swaged over it at e, the key thus locking the parts firmly together.

The outer barrel-covering Bis drawn snugly upon the built-up barrel within it at the rear end by the connecting means described and at the forward end by the use of a front-sight band b, forced or shrunk upon the barrel, the construction of the sight being shown in detail in my application led herewith, No. 88,886.

What I claim is-f- 1. A rifle-barrel formed of a plurality of tubes having the rear portion of one outset at the seam and a key for locking the outset edges, substantially as described.

2. The combination of the rifle barrel formed of a plurality of tubes, one of said tubes provided with outset edges at the breech, the receiver provided with similar outset edges and means for engaging the rifle-barrel and receiver through the said edges, substantially as described.

3. A rifle-barrel formed of a plurality of tubes, one of said tubes having outset edges at the breech, said outset edges provided with a keyway and a key swaged in said keyway, substantially as described.

4. In gun construction, the combination of the barrel provided with the holding-rib at the rear, the receiver provided With outset edges, and means for locking the rib and edges together, substantially as described.

5. In gun construction, the inner barrel, l

tially as described.

In testimony whereof I sign this specification in the presence of two Witnesses.

CLARENCE J. HAMILTON. Vitnesses:

S. E. THOMAS, HENRY E. VILLEROT. 

